JP2015067913A - Coolable animal hair fiber cloth - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a new animal hair fiber cloth capable of sufficiently feeling coolability even in an environment called as extreme heat.SOLUTION: Provided is a coolable animal hair fiber cloth dyed by a reactive dye, and is characterized in that the surface of the fiber composing the cloth is provided with organic polymer fine particles. In this invention, preferably, ceramic fine particles are jointly used. By this invention, clothing capable of sufficiently dealing with severe summer environment in recent years can be provided, and, since the cloth in this invention is composed by animal hair fiber, its feeling and texture are excellent as well.

Description

  The present invention relates to an animal hair fiber fabric excellent in coolness.

  In recent years, various cool-sensitive fabrics have been proposed as summer temperatures rise due to the effects of global warming. For example, Patent Document 1 discloses a cool-sensitive cotton fiber fabric in which polymethyl methacrylate particles are fixed to a fiber surface via a polyurethane adhesive. Patent Document 2 discloses a cool-sensitive fabric composed of wool fibers pre-dyed with a black reactive dye.

JP-A-9-170176 JP 2008-115499 A

  However, recently, the temperature rise in summer has become more significant than before, with heat stroke being reported in various places. Under such circumstances, there is an increasing demand for cool-sensitive fabrics such as the cool biz movement showing excitement.

  Thus, when the cool-sensitive fabrics proposed so far are examined, for example, the cool-sensitive fabric described in the above-mentioned patent document has a certain effect on the expression of cool feeling. However, it is difficult to say that the coolness of such a fabric has a coolness enough to cope with the recent intensely hot environment as the temperature of the fabric surface is lowered by several degrees Celsius compared to a blank (unprocessed product). Is the actual situation. In particular, animal hair fiber fabrics are originally suitable for winter clothing, but due to their good texture and texture, there has been an inquiry as summer clothing. Various studies have been made on how to proceed. However, no fabric has yet been proposed that emits sufficient coolness to accommodate the recent summer environment.

  This invention is made | formed in view of such the present condition, and makes it a subject to provide the novel animal hair fiber fabric which can fully feel cool feeling also in the environment called extreme heat.

  As a result of diligent research to solve the above problems, the present inventor has reflected animal hair fibers with reactive dyes and attached organic polymer fine particles to the fiber surface to reflect much near infrared rays contained in sunlight. As a result, it has been found that excellent coolness can be obtained, and the present invention has been made.

  That is, the gist of the present invention is a cool-sensitive animal hair fiber fabric, which is a fabric dyed with a reactive dye and has organic polymer fine particles on the surface of the fibers constituting the fabric.

  The animal hair fiber fabric of the present invention expresses an unprecedented cool feeling. As a result, it is possible to provide clothing that can sufficiently cope with the recent severe summer environment. Furthermore, since the fabric of the present invention is composed of animal hair fibers, it is excellent in texture and texture.

It is a front schematic diagram showing an example of a surface temperature measuring device.

  Hereinafter, the present invention will be described in detail.

  The present invention relates to an animal hair fiber fabric excellent in coolness.

  The animal hair fiber in the present invention refers to natural keratinous fiber collected from animals such as sheep, camels, goats and rabbits. The animal hair fiber fabric refers to a woven fabric or a knitted fabric in which animal hair fibers are used as a main constituent fiber, and the content of animal hair fibers in the fabric is preferably 30% by mass or more, and 50 to 100% by mass. % Is more preferable. When the content of animal hair fibers is less than 30% by mass, the bulkiness of the fabric is reduced, so that the soft texture and lightness tend to be impaired.

  Examples of fibers other than animal hair fibers contained in the fabric include synthetic fibers such as polyethylene terephthalate, polylactic acid, acrylic, nylon, and polyurethane, natural fibers such as silk, cotton, hemp, and bamboo, viscose rayon, and solvent spinning. Examples thereof include cellulose fibers, regenerated fibers such as copper ammonia rayon, and semisynthetic fibers such as acetate.

  The fabric of the present invention is excellent in cool feeling as described above. Coolness in the present invention is exhibited by dyeing with reactive dyes and adhesion of organic polymer fine particles. In other words, this is a synergistic effect of these two requirements.

  First, the former will be explained. When the dyed animal hair fiber is exposed to sunlight, it absorbs light in the near-infrared region, and as a result, thermal movement of internal molecules is activated by light energy, and heat is generated. It is known from the past. In the case of dyed animal hair fibers, the thermal motion becomes active especially by near infrared rays having a wavelength of 800 to 1200 nm. It is thought that this is because the dye actively absorbs light in the region. Therefore, when comparing the near-infrared absorption degree of various dyes, it was found that reactive dyes have a low absorption degree compared to chromium dyes conventionally used for dyeing animal hair fiber fabrics. .

  The molecular structure of the reactive dye is not particularly limited, but preferably has no metal atom in the molecule. This is because metal atoms easily absorb light. Examples of reactive dyes that can be used in the present invention include Lanasol Yellow CE, Lanasol Red CE, Lanasol Blue CE, Lanasol Navy CE, Lanasol Black CE, Cibacron Gray GE-01, manufactured by BASF Japan Ltd., Sumika Chemtex. Sumifix HF Yellow 3R gran, Sumifix HF Scallet 2G gran, Sumifix HF Red G gran, Sumifix HF Blue 2G gran, Sumifix HF Ny Gr liquid, Sumifix Bla k B 150%, Sumifix Black E-XF, Realan Black EHF gran, Realan Black Glan, Realan Blue EHF, Realan Blue E, Gran RanH, Rean H Realan Red RC gran, Realan DeepRed EHF, Realan Amber EHF, Realan Yellow EHF, Realan Yellow 3G, Realan Golden Yellow RC 150% gran and the like. In addition, reactive dyes having a vinyl sulfone group, sulfatoethyl or sulfone group in the molecule can also be used. Examples thereof include Remazol Black B (Reactive Black 5) and Remazol Black RL (Reactive Black 31) manufactured by Dystar Japan. can give.

  However, merely dyeing animal hair fibers with reactive dyes is not sufficient, although a certain cool feeling can be obtained. Therefore, organic polymer fine particles are adhered to the fiber surface. By using the organic polymer fine particles, visible light having a strong light energy of about 400 to 700 nm and a near infrared ray of about 700 to 2000 nm can be efficiently reflected.

  Organic polymer fine particles include polystyrene, polyamides, polyvinyl chloride, polyolefins, polyurethanes, polyesters, polyacrylic acids, polyacrylic esters, polyacrylonitriles, and a mixture of two or more of epoxy resins. Can be used.

  In the present invention, ceramic fine particles may be used in combination as necessary. By using ceramic fine particles together, light can be reflected more. As the ceramic fine particles, alumina, silica, titanium oxide, magnesium oxide and zinc oxide can be used, or a mixture of two or more kinds can be used.

  The average primary particle diameter of the organic polymer fine particles and the ceramic fine particles is preferably 0.1 to 500 μm, more preferably 0.5 to 150 μm, still more preferably 1 to 100 μm, and most preferably 1 to 10 μm.

  The shape of the organic polymer fine particles and the ceramic fine particles may be any of a spherical shape, a disk shape, a shape having a fracture surface and a protrusion, and other irregular shapes. There is almost no difference in terms of expression of coolness. Among these, a spherical shape is preferable from the viewpoint of easy production with a fixed shape.

  The adhesion amount of the organic polymer fine particles and the ceramic fine particles is preferably 1 to 15% by mass, more preferably 2 to 8% by mass with respect to the fiber mass. If it is less than 1% by mass, it is difficult to reflect light sufficiently, and if it exceeds 15% by mass, the reflection of light is not further promoted, and the texture of the fabric tends to be lowered.

  In order to evaluate how much the amount of reflection of the near infrared ray is, the near infrared average reflectance of the fabric may be measured. In the present invention, specifically, the near-infrared average reflectance at a wavelength of 800 to 1200 nm is preferably 60% or more, and more preferably 65 to 95%. This is because, as described above, in order to develop cool sensation, it is necessary not to absorb as much near infrared light as possible in the region, that is, it is necessary to reflect as much near infrared light as possible, and specifically, the near infrared average reflectance. When it becomes less than 60%, it becomes impossible to realize cool feeling. In order to adjust the near-infrared average reflectance, in addition to adjusting the amounts of reactive dye and organic polymer fine particles used, ceramic fine particles may be used in combination as necessary.

Spectral colorimetry is adopted as a method for measuring the near-infrared average reflectance. Specifically, it is measured using a self-recording spectrophotometer “UV-3101PC (trade name)” manufactured by Shimadzu Corporation.
Further, in order to evaluate how much coolness is developed as a result of near-infrared reflection, the surface temperature of the fabric may be measured. The more near infrared rays having a wavelength of 800 to 1200 nm are reflected, the more heat generation of the fibers is suppressed, and as a result, the temperature rise of the fabric is suppressed, and the desired cool feeling can be obtained. FIG. 1 is a schematic front view of a surface temperature measuring apparatus according to the present invention. This surface temperature measuring device comprises a photographic reflex lamp 6, a heat insulating box 2, and a thermographic device 5 as a basic structure. The photographic reflex lamp 6 has a total wattage of 500 W and is installed on the opposite side of the thermography device 5 with the heat insulation box 2 interposed therebetween. The heat insulating box 2 has openings on the right and left sides, and can take in the light of the reflex lamp 6 from the right opening 4. Although it does not specifically limit as a material of the heat insulation box 2, A polystyrene foam can be employ | adopted preferably by the point which is easy to acquire. The thermography device 5 is a device that images the surface temperature distribution of the sample 1 and is installed on the left side of the heat insulation box 2. The thermography apparatus 5 uses a flat type, adopts a measurement wavelength of 8 to 13 μm and an emissivity of 1.

  The surface temperature is measured in a constant temperature and humidity chamber adjusted to 20 ° C. × 65% RH. In the measurement, first, the sample 1 is pasted so as to close the left opening 3 of the heat insulating box 2. Next, the position of the reflex lamp 6 is adjusted so that the distance between the surface of the sample 1 and the reflex lamp 6 is 70 cm, and the left opening 3 of the heat insulating box 2 is blocked while irradiating light from the reflex lamp 6. The surface temperature of 1 is imaged by the thermographic device 5. Then, the measurement is continued as it is, and the temperature when the thermal equilibrium is reached is defined as the fabric surface temperature.

  The fabric of the present invention is thus excellent in cool feeling. On the other hand, the hue of the fabric is not particularly limited. In this respect, in general, fabrics with dark and dark hues tend to absorb light energy and tend not to exhibit coolness. However, according to the fabric of the present invention, good coolness is exhibited even with dark and dark hues. . Specifically, even when the hue of the fabric is set to L * value 20 or less based on black and amber color, good coolness is exhibited. The L * value represents the brightness of the color in the L * a * b * color system conforming to JISZ8729, and becomes brighter as the numerical value increases. As a method for measuring the L * value, the stimulus value direct reading method is adopted. The stimulus value direct reading method is a method of directly measuring tristimulus values, and using a photoelectric colorimeter, a stimulus value direct reading type color meter, or the like, has a sensitivity almost the same as the spectral sensitivity corresponding to the human eye. This is a method of measuring and converting X, Y, and Z, which are so-called tristimulus values of a sample, with two sensors. As a specific method for measuring the L * value, the tristimulus value is measured using “CHROMA METER CR-200 (trade name)” manufactured by Minolta Camera Co., Ltd. and converted to obtain the L * value. .

  According to the present invention, a fabric having excellent cool feeling can be obtained regardless of the hue. For this reason, the fabric of the present invention can be suitably used not only for bright and light-colored clothes but also for deep and deep clothing such as formal clothing.

  Next, a method for obtaining the cool-sensitive animal hair fiber fabric of the present invention will be described.

  In order to obtain the cool-sensitive animal hair fiber fabric of the present invention, first, an animal hair fiber fabric dyed with a reactive dye is prepared. In order to obtain such a fabric, a method by dyeing a dyed animal hair spun yarn by weaving or knitting or a method by post dyeing by weaving and knitting using animal hair spun yarn and then dyeing may be adopted. Here, the dyed animal hair spun yarn can be obtained by dyeing fibers by rose hair dyeing, top dyeing or the like and then spinning them, or by skein dyeing or cheese dyeing after spinning. Further, at any stage of the spinning process, shrinkage protection by a chlorine oxidation method, an oxygen oxidation method, or the like may be appropriately incorporated.

  Next, an aqueous treatment liquid in which organic polymer fine particles are dispersed in a solution containing a binder is prepared. The fabric is dipped in this treatment liquid, and excess treatment liquid is squeezed out, followed by drying and heat treatment. Thereby, organic polymer fine particles adhere to the fiber surface via the binder. Only when animal wool spun yarn is dyed by pre-dyeing, the organic polymer fine particles are made into fibers by immersing the spun yarn wound up in cheese or corn into the treatment liquid while continuously pulling it out and drying in the drying zone. It may be attached to. Thereafter, the spun yarn is appropriately wound and woven or knitted to obtain the desired fabric.

  Although it does not specifically limit as a binder, Preferably, it does not melt | dissolve in water, there is no adhesiveness, and the thing which cannot reduce the feel of a fabric is selected and used. Among them, those that are water-soluble before heat treatment but become water-insoluble by heating are preferable. Specifically, polyurethane, polyacrylic acid, polyester, polyamide, and polyamino acid urethane copolymer are preferable, and polyurethane, polyacrylic acid, and polyamino acid urethane copolymer are more preferable.

  The adhesion amount of the binder to the animal hair fibers is preferably about 1 to 3% by mass, more preferably about 1.5 to 2% by mass with respect to the fibers.

  When the ceramic fine particles are used in combination, the ceramic fine particles may be dispersed together in the treatment liquid. By doing so, the ceramic fine particles can be attached to the fiber surface through the binder. In addition to ceramic fine particles, appropriate additives such as antistatic agents, ultraviolet absorbers, antifouling agents, water absorbing agents, water repellents, antibacterial agents, fungicides, and softeners are added to the treatment liquid as necessary. You may add to.

  The amount of organic polymer fine particles, binder, ceramic fine particles, and various additives attached to animal hair fibers can be easily controlled by appropriately adjusting the concentration in the treatment liquid, treatment time, squeezing rate, and the like.

  EXAMPLES Next, although an Example demonstrates this invention concretely, this invention is not limited to the following Example.

(Comparative Example 1)
Wool raw wool was washed, carded and made into a sliver, wound as a wool top, and the wool top was introduced into an Overmeier dyeing machine and dyed. The composition of the dye bath is shown in <Prescription 1>. In dyeing, the bath ratio is first adjusted to 1:10, the temperature is raised to 40 ° C., dyes and auxiliary agents are added, the temperature is raised at a rate of 2 ° C./min until 100 ° C., and dyeing is continued for 90 minutes. did. After dyeing, the top was washed with water. Then, using an aqueous ammonia solution having a pH of 8.5, an alkali cleaning treatment was performed at 85 ° C. for 20 minutes at a bath ratio of 1:10, and further, overflow water washing was performed. Then, the formic acid (concentration 85 mass%) 1 mass% aqueous solution was used, neutralized for 10 minutes at normal temperature, and it dried.

<Prescription 1>
Reactive dye (manufactured by BASF Japan Ltd., “Lanasol Black CE (trade name)” 4.5 omf
Reactive dye (manufactured by BASF Japan, “Lanasol Blue CE (trade name)” 0.5 omf
Auxiliary agent (pH adjusting agent) Ammonium sulfate 4.0 parts by mass Auxiliary agent (pH adjusting agent) Acetic acid (concentration 80% by mass) 2.0 parts by mass auxiliary agent (leveling agent) (manufactured by BASF Japan Ltd., “Albegal B (Product name) "2.0% by mass

  On the other hand, after carding polyester raw cotton to make a sliver, this was bump-wrapped, and the bump winding was introduced into a high-temperature high-pressure dyeing machine and dyed. The composition of the dye bath is shown in <Prescription 2>. In dyeing, the bath ratio is first adjusted to 1:10, the temperature is raised to 50 ° C., dyes and auxiliary agents are added, the temperature is raised to 130 ° C. at a rate of 1 ° C./min, and dyeing is performed for 60 minutes. did.

<Prescription 2>
Disperse dye (manufactured by Clariant Japan KK, “Foron Black RD-SE 150% (trade name)” 5.5 omf
Disperse dye (manufactured by Clariant Japan Co., Ltd., “Foron Black S-WF (trade name)” 3.7 omf
Auxiliary agent (pH adjuster) ammonium sulfate 1.0 part by mass Auxiliary agent (pH adjuster) acetic acid (concentration 80% by mass) 2.0 parts by mass

  After dyeing, the sliver was washed with water. Then, using the bath solution of <Prescription 3> below, it was subjected to reduction cleaning at a bath ratio of 1:10 at 80 ° C. for 20 minutes. Then, it washed with water and dried.

<Prescription 3>
Reducing agent (manufactured by ADEKA, “Techlite (trade name)”) 0.4 g / l
Caustic soda 2.0g / l
Cleaning agent (Asahi Yushi Kogyo Co., Ltd., “A Pole NS (trade name)”) 2.0 g / l

Next, the obtained wool sliver and polyester sliver were introduced into a series of eyelash spinning processes, and doubling so that the former was 70% by mass and the latter was 30% by mass. No.) wool spun yarn was obtained. Thereafter, a plain woven fabric is woven using the obtained spun yarn, and finished and finished, resulting in a finishing density (warp density x weft density) of 66 yarns / 2.54 cm × 57 yarns / 2.54 cm, and a basis weight of 148 g / m ^2. Fabric was obtained.

Example 1
An aqueous treatment liquid in which organic polymer fine particles were dispersed in a solution containing a binder was prepared. The composition of the treatment liquid is shown in <Prescription 4>.

<Prescription 4>
Organic polymer fine particles (polyacrylonitriles, manufactured by Daiwa Chemical Industry Co., Ltd., “Refre Cool MTR-A (trade name)” 50 g / l
Binder (aqueous polyurethane, manufactured by Daiwa Chemical Industry Co., Ltd., “Binder U30-NP (trade name)” 25 g / l

The fabric obtained in Comparative Example 1 was dipped in the aqueous treatment liquid, squeezed with a mangle to a squeezing ratio of 70%, dried at 120 ° C. for 2 minutes, and further heat-treated at 170 ° C. for 60 seconds. The obtained fabric had a finishing density (warp density x weft density) of 66 pieces / 2.54 cm × 57 pieces / 2.54 cm and a basis weight of 148 g / m ² .

(Comparative Example 2)
A dye bath having the composition shown in <Prescription 5> was prepared.

<Prescription 5>
Chrome dye (manufactured by Taoka Chemical Industry Co., Ltd., “Sunchromine Black ET (A) conc. (Trade name)” 6.0 omf
Auxiliary agent (pH adjusting agent) Ammonium sulfate 2.0 parts by mass Auxiliary agent (pH adjusting agent) Acetic acid (concentration 80% by mass) 1.5 parts by mass auxiliary agent (leveling agent) (manufactured by BASF Japan Ltd., “Albegal SET” (Product name) 0.8% by mass

  The wool top used in Comparative Example 1 was introduced into an Overmeier dyeing machine and dyed using the dye bath of <Prescription 5>. In dyeing, the bath ratio is first adjusted to 1:10, the temperature is raised to 40 ° C., dyes and auxiliary agents are added, the temperature is raised at a rate of 2 ° C./min until 100 ° C., and dyeing is performed for 30 minutes did. The dyeing bath was cooled to 90 ° C. and 2.0% by mass of formic acid (concentration 85% by mass) was added, and then the temperature was raised to 100 ° C. and dyeing was continued for another 20 minutes. Thereafter, the dyeing bath was cooled to 90 ° C. and 1.2% by mass of sodium dichromate was added, and then the temperature was raised again to 100 ° C. and dyed for another 30 minutes. After dyeing, the sliver was washed with water and dried.

Thereafter, the same process as in Comparative Example 1 was performed. That is, the dyed wool sliver and the dyed polyester sliver are doubled (the former 70% by mass, the latter 30% by mass) to obtain 2/72 count (metric count) wool spun yarn, which is then used. A fabric was obtained. The obtained fabric had a finishing density (warp density x weft density) of 66 pieces / 2.54 cm × 57 pieces / 2.54 cm and a basis weight of 148 g / m ² .

(Comparative Example 3)
Using the fabric obtained in Comparative Example 2, the same aqueous treatment solution as in Example 1 was used to obtain a fabric. The obtained fabric had a finishing density (warp density x weft density) of 66 pieces / 2.54 cm × 57 pieces / 2.54 cm and a basis weight of 148 g / m ² .

(Comparative Example 4)
Other than using the dye bath having the composition shown in <Prescription 6> instead of the dye bath of <Prescription 1> and using the dye bath having the composition shown in <Prescription 7> instead of the dye bath of <Prescription 2> It carried out similarly to the comparative example 1, and obtained the wool spun yarn and the fabric. The obtained fabric had a finishing density (warp density x weft density) of 66 pieces / 2.54 cm × 57 pieces / 2.54 cm and a basis weight of 148 g / m ² .

<Prescription 6>
Reactive dye (manufactured by BASF Japan Ltd., “Cibacron Gray GE-01 (trade name)” 3.0 omf
Reactive dye (manufactured by BASF Japan, “Lanasol Blue CE (trade name)” 0.5 omf
Auxiliary agent (pH adjusting agent) Ammonium sulfate 4.0 parts by mass Auxiliary agent (pH adjusting agent) Acetic acid (concentration 80% by mass) 2.0 parts by mass auxiliary agent (leveling agent) (manufactured by BASF Japan Ltd., “Albegal B (Product name) "2.0% by mass

<Prescription 7>
Disperse dye (manufactured by Nippon Kayaku Co., Ltd., “Kayaron Polyster Gray GL-S (trade name)” 4.5 omf
Auxiliary agent (pH adjuster) ammonium sulfate 1.0 part by mass Auxiliary agent (pH adjuster) acetic acid (concentration 80% by mass) 2.0 parts by mass

(Example 2)
Using the fabric obtained in Comparative Example 4, the same aqueous treatment solution as in Example 1 was used to obtain a fabric. The obtained fabric had a finishing density (warp density x weft density) of 66 pieces / 2.54 cm × 57 pieces / 2.54 cm and a basis weight of 148 g / m ² .

(Comparative Example 5)
Other than using the dye bath having the composition shown in <Prescription 8> instead of the dye bath in <Prescription 5>, and using the dye bath having the composition shown in <Prescription 7> instead of the dye bath in <Prescription 2>, In the same manner as in Comparative Example 2, a wool spun yarn and a fabric were obtained. The obtained fabric had a finishing density (warp density x weft density) of 66 pieces / 2.54 cm × 57 pieces / 2.54 cm and a basis weight of 148 g / m ² .

<Prescription 8>
Chrome dye (manufactured by Taoka Chemical Industry Co., Ltd., “Sunchromine Gray BL (N) (trade name)” 3.5 omf
Auxiliary agent (pH adjusting agent) Ammonium sulfate 2.0 parts by mass Auxiliary agent (pH adjusting agent) Acetic acid (concentration 80% by mass) 1.5 parts by mass auxiliary agent (leveling agent) (manufactured by BASF Japan Ltd., “Albegal SET” (Product name) 0.8% by mass

(Comparative Example 6)
Using the fabric obtained in Comparative Example 5, the same aqueous treatment solution as in Example 1 was used to obtain a fabric. The obtained fabric had a finishing density (warp density x weft density) of 66 pieces / 2.54 cm × 57 pieces / 2.54 cm and a basis weight of 148 g / m ² .

  The performances of the fabrics according to Examples and Comparative Examples obtained above are shown below.

  The fabrics according to the examples all exhibited excellent cool feeling. Further, it was confirmed that the coolness was excellent regardless of the hue of the fabric.

  On the other hand, although the fabric according to Comparative Examples 1 and 4 has a certain cool sensation, since the organic polymer fine particles are not used together, the cool sensation is sufficient to cope with the recent severe summer environment. Not on the level. In Comparative Examples 2 and 5, not only reactive dyes but also organic polymer fine particles were not used, so no cool feeling was obtained. Since Comparative Examples 3 and 6 were provided with organic polymer fine particles on the fiber surface, the cool feeling was superior to the fabrics according to Comparative Examples 2 and 5, but no reactive dye was used in combination. It was not enough.

DESCRIPTION OF SYMBOLS 1 Sample 2 Thermal insulation box 3 Left part opening part 4 Right part opening part 5 Thermography apparatus 6 Photo reflex lamp

Claims (1)

A cool-sensitive animal hair fiber fabric, characterized in that it is a fabric dyed with a reactive dye and has organic polymer fine particles on the surface of the fibers constituting the fabric.